Probing compressed mass spectra in electroweak supersymmetry with Recursive Jigsaw Reconstruction

Santoni, M.

doi:10.1007/jhep05(2018)058

Cited by 2 publications

(2 citation statements)

References 35 publications

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“…RJR improves upon conventional analysis methods, while being complementary to them, and provides an exciting new way to search for evidence of BSM physics. Further studies of the RJR technique [6] have demonstrated improved sensitivity in searches for third generation SUSY, both in direct production and in the decay of gluinos, in the former case huge gains can be made in the compressed cases. Furthermore, χ 0 2 χ ± 1 pair-production, decaying via intermediate W and Z is an interesting topology where there is considerable promise of sensitivity [6] in regions of parameter space that remain as yet unexplored.…”

Section: Discussionmentioning

confidence: 99%

“…Given the customizable nature of the approach one can easily build additional complexity into an analysis by recursively adding more information to a decay tree, while providing choices by which to break any combinatoric and kinematic ambiguities that may arise. This is demonstrated in Figure 3 Through studies of simulated samples performed in [6] much of the physics outlined in [1] has been shown to provide excellent sensitivity to improve a wide range of the physics program at a high energy collider such as the LHC.…”

Section: Pos(eps-hep2017)292mentioning

confidence: 99%

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Compressed SUSY searches with the Recursive Jigsaw Reconstruction

Jackson¹

2017

Proceedings of the European Physical Society Conference on High Energy Physics — PoS(EPS-HEP2017)

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The Recursive Jigsaw Reconstruction technique provides a powerful way to search for new physics in scenarios with multiple missing particles in the final state. By defining a specific input decay tree we demonstrate a new approach to search for supersymmetry in scenarios where the mass difference between the parent super-particles and the lightest supersymmetric daughter particles is small. Such scenarios are colloquially referred to as "compressed". The imposition of this decay tree provides a clear way to define which objects are associated with an initial-state radiation system, and those which are candidate decay products of the supersymmetric system of particles. From this choice a set of variables emerge, providing a method to distinguish compressed signals from the pernicious standard model backgrounds. We introduce this new approach and demonstrate it's power through application to searches in several final states. We further touch on the applicability of the Recursive Jigsaw method in general to new physics searches where conventional kinematic discriminators break down.

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Section: Discussionmentioning

confidence: 99%

Section: Pos(eps-hep2017)292mentioning

confidence: 99%

Compressed SUSY searches with the Recursive Jigsaw Reconstruction

Jackson¹

2017

Proceedings of the European Physical Society Conference on High Energy Physics — PoS(EPS-HEP2017)

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Searches for new phenomena in events with two leptons, jets, and missing transverse momentum in 139 fb$$^{-1}$$ of $$\varvec{\sqrt{s}}=13$$ TeV $$\varvec{pp}$$ collisions with the ATLAS detector

Aad¹,

Abbott²,

Abbott³

et al. 2023

Eur. Phys. J. C

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Searches for new phenomena inspired by supersymmetry in final states containing an $$e^+e^-$$ e + e - or $$\mu ^+\mu ^-$$ μ + μ - pair, jets, and missing transverse momentum are presented. These searches make use of proton–proton collision data with an integrated luminosity of $$139~\text {fb}^{-1}$$ 139 fb - 1 , collected during 2015–2018 at a centre-of-mass energy $$\sqrt{s}=13~$$ s = 13 TeV by the ATLAS detector at the Large Hadron Collider. Two searches target the pair production of charginos and neutralinos. One uses the recursive-jigsaw reconstruction technique to follow up on excesses observed in $$36.1~\text {fb}^{-1}$$ 36.1 fb - 1 of data, and the other uses conventional event variables. The third search targets pair production of coloured supersymmetric particles (squarks or gluinos) decaying through the next-to-lightest neutralino $$(\tilde{\chi }_2^0)$$ ( χ ~ 2 0 ) via a slepton $$(\tilde{\ell })$$ ( ℓ ~ ) or Z boson into $$\ell ^+\ell ^-\tilde{\chi }_1^0$$ ℓ + ℓ - χ ~ 1 0 , resulting in a kinematic endpoint or peak in the dilepton invariant mass spectrum. The data are found to be consistent with the Standard Model expectations. Results are interpreted using simplified models and exclude masses up to 900 GeV for electroweakinos, 1550 GeV for squarks, and 2250 GeV for gluinos.

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Probing compressed mass spectra in electroweak supersymmetry with Recursive Jigsaw Reconstruction

Cited by 2 publications

References 35 publications

Compressed SUSY searches with the Recursive Jigsaw Reconstruction

Compressed SUSY searches with the Recursive Jigsaw Reconstruction

Searches for new phenomena in events with two leptons, jets, and missing transverse momentum in 139 fb$$^{-1}$$ of $$\varvec{\sqrt{s}}=13$$ TeV $$\varvec{pp}$$ collisions with the ATLAS detector

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